java获取客户端mac

❶ java如何获取mac地址

以windows举例。x0dx0a运行命令" cmd ipconfig /all"就会出现以下结果x0dx0a x0dx0aPhysical Address. . . . . . . . . : 20-CF-30-9A-60-EEx0dx0a。x0dx0ajava就能过这样的命令来获取。以下是示例。x0dx0ax0dx0aimport java.io.BufferedReader;x0dx0aimport java.io.IOException;x0dx0aimport java.io.InputStreamReader;x0dx0ax0dx0apublic class TestMacx0dx0a{x0dx0a public static void main(String[] args) {x0dx0a System.out.println("Operation System=" + getOsName());x0dx0a System.out.println("Mac Address=" + getMACAddress());x0dx0a System.out.println("通过ip获取mac"+getMACAddress("192.168.1.101"));x0dx0a }x0dx0ax0dx0a public static String getOsName() {x0dx0a String os = "";x0dx0a os = System.getProperty("os.name");x0dx0a return os;x0dx0a }x0dx0a x0dx0a public static String getMACAddress() {x0dx0a String address = "";x0dx0a String os = getOsName();x0dx0a if (os.startsWith("Windows")) {x0dx0a try {x0dx0a String command = "cmd.exe /c ipconfig /all";x0dx0a Process p = Runtime.getRuntime().exec(command);x0dx0a BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));x0dx0a String line;x0dx0a while ((line = br.readLine()) != null) {x0dx0a if (line.indexOf("Physical Address") > 0) {x0dx0a int index = line.indexOf(":");x0dx0a index += 2;x0dx0a address = line.substring(index);x0dx0a break;x0dx0a }x0dx0a }x0dx0a br.close();x0dx0a return address.trim();x0dx0a } catch (IOException e) {x0dx0a }x0dx0a } else if (os.startsWith("Linux")) {x0dx0a String command = "/bin/sh -c ifconfig -a";x0dx0a Process p;x0dx0a try {x0dx0a p = Runtime.getRuntime().exec(command);x0dx0a BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));x0dx0a String line;x0dx0a while ((line = br.readLine()) != null) {x0dx0a if (line.indexOf("HWaddr") > 0) {x0dx0a int index = line.indexOf("HWaddr") + "HWaddr".length();x0dx0a address = line.substring(index);x0dx0a break;x0dx0a }x0dx0a }x0dx0a br.close();x0dx0a } catch (IOException e) {x0dx0a }x0dx0a }x0dx0a address = address.trim();x0dx0a return address;x0dx0a }x0dx0ax0dx0apublic static String getMACAddress(String ipAddress) { x0dx0aString str = "", strMAC = "", macAddress = ""; x0dx0atry { x0dx0aProcess pp = Runtime.getRuntime().exec("nbtstat -a " + ipAddress); x0dx0aInputStreamReader ir = new InputStreamReader(pp.getInputStream()); x0dx0aLineNumberReader input = new LineNumberReader(ir); x0dx0afor (int i = 1; i < 100; i++) { x0dx0astr = input.readLine(); x0dx0aif (str != null) { x0dx0aif (str.indexOf("MAC Address") > 1) { x0dx0astrMAC = str.substring(str.indexOf("MAC Address") + 14, x0dx0astr.length()); x0dx0abreak; x0dx0a} x0dx0a} x0dx0a} x0dx0a} catch (IOException ex) { x0dx0areturn "Can't Get MAC Address!"; x0dx0a} x0dx0a// x0dx0aif (strMAC.length() < 17) { x0dx0areturn "Error!"; x0dx0a} x0dx0ax0dx0amacAddress = strMAC.substring(0, 2) + ":" + strMAC.substring(3, 5) x0dx0a+ ":" + strMAC.substring(6, 8) + ":" + strMAC.substring(9, 11) x0dx0a+ ":" + strMAC.substring(12, 14) + ":" x0dx0a+ strMAC.substring(15, 17); x0dx0a// x0dx0areturn macAddress; x0dx0a} x0dx0a} x0dx0ax0dx0a剑天梦的回答原理和我这个一样，都是通过Process 执行命令。 我直接补充到答案里了。不过x0dx0a我这边运行那个命令出来的结果很多，那么花的时间就长了。优点是能够获取别人的mac地址 。

❷ Java获取电脑mac地址，如果是双网卡获取的mac地址是不是随机的

取mac要先得到NetworkInterface对象，多网卡的话会有多个对象，所以要看你在哪个对象上取mac了，反正不会是随机

❸ Java web 怎么得到客户端的Mac地址

这个跟浏览器有关,你的js权限要向浏览器申请,浏览器向操作系统申请

现在的浏览器并没有开放这个权限.

解决办法1:用C++写GUI,调用操作系统的API,获取mac地址,每个操作系统的API是不一样的.

解决办法2:自己写一个浏览器,并且写好js的api,然后浏览器去请求系统调用,获得mac地址.

所谓的active插件一样也是向操作系统申请了api获取的

❹ java如何获取mac地址

解释说明可参考代码中的注释即可：
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.LineNumberReader;

public class GetMac {

/**
* java获取客户端网卡的MAC地址
*
* @param args
*/
public static void main(String[] args) {
GetMac get = new GetMac();
System.out.println("1="+get.getMAC());
System.out.println("2="+get.getMAC("127.0.0.1"));
}

// 1.获取客户端ip地址( 这个必须从客户端传到后台)：
// jsp页面下，很简单，request.getRemoteAddr() ;
// 因为系统的VIew层是用JSF来实现的，因此页面上没法直接获得类似request，在bean里做了个强制转换

// public String getMyIP() {
// try {
// FacesContext fc = FacesContext.getCurrentInstance();
// HttpServletRequest request = (HttpServletRequest) fc
// .getExternalContext().getRequest();
// return request.getRemoteAddr();
// } catch (Exception e) {
// e.printStackTrace();
// }
// return "";
// }

// 2.获取客户端mac地址
// 调用window的命令，在后台Bean里实现 通过ip来获取mac地址。方法如下：

// 运行速度【快】
public String getMAC() {
String mac = null;
try {
Process pro = Runtime.getRuntime().exec("cmd.exe /c ipconfig/all");

InputStream is = pro.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String message = br.readLine();

int index = -1;
while (message != null) {
if ((index = message.indexOf("Physical Address")) > 0) {
mac = message.substring(index + 36).trim();
break;
}
message = br.readLine();
}
System.out.println(mac);
br.close();
pro.destroy();
} catch (IOException e) {
System.out.println("Can't get mac address!");
return null;
}
return mac;
}

// 运行速度【慢】
public String getMAC(String ip) {
String str = null;
String macAddress = null;
try {
Process p = Runtime.getRuntime().exec("nbtstat -A " + ip);
InputStreamReader ir = new InputStreamReader(p.getInputStream());
LineNumberReader input = new LineNumberReader(ir);
for (; true;) {
str = input.readLine();
if (str != null) {
if (str.indexOf("MAC Address") > 1) {
macAddress = str
.substring(str.indexOf("MAC Address") + 14);
break;
}
}
}
} catch (IOException e) {
e.printStackTrace(System.out);
return null;
}
return macAddress;
}
}